1238320 玖、發明說明 (發明說明應敘明：發明所屬之技術領域、先前技術、內容、實施方式及圖式簡單說明) 【一、發明所屬之技術領域】 本發明係關於通用序列匯流排的技術領域’尤指一 種通用序列匯流排複合式裝置。 【二、先前技術】 由於電子技術快速演進，現今電子產品無不朝著快 速傳輸的趨勢演進。而在個人電腦中，使用廣泛的通用 序列匯流排（Universal Serial Bus，USB)也由 USB 1 · 1 朝向 USB2.0演進。在USB2.0規格中，其傳輸速度最快可達 480Mbits/s，遠較USB1.1的12 Mbits/s的傳輸速度快了將 近40倍。其係使用差動對信號USBD+及USBD-來進行傳 輸。由於考慮其傳輸速度高達480Mbits/s，且差動對信號 USBD+及USBD-的傳送及接收均涉及類比技術，Intel公 司乃定義一 UTMI(USB 2.0 Transceiver Macrocell Inter face)介面訊號，以讓專精及類比技術的公司能設計 UTM(USB 2.0 Transceiver Macrocell，UTM)，而其他積 體電路設計公司則設計USB 2.0規格中的其他功能，以達 到分工的目的，俾加速USB2.0產品的推廣。 然而，一個具有USB 2.0插槽的主機110欲連接多個 USB裝置時，由於USB插槽數量的限制，如圖1所示，該 主機110需先連結至一集線器120，再由該集線器120的下 行連接埠122、123連接至USB印表機130及USB掃描器 140。由圖1可知，此種配置需使用到6個實體層。故習知 1238320 2會使用多個實體層，而增加成本。同時該集線器120 ”有3個貫體層，由於實體層包含類比技術，而影響該集 電路良率’因此，習知通用序列匯流排複合 式裝置的設計仍有諸多缺失而有予以改進之必要。 發明人犮因於此，本於積極發明之精神，函思一種 可以解决上述問題之「使用集線器連接層與削！介面之 通用序列匯流排複合式裝置」，幾經研究 此項發明。 取 【三、發明内容】 本毛月之目的係在提供一種使用集線器連接層與 晒介面之制序舰流排複合式裝置，可解決通用序 列匯桃排複合式裝置需使用多個實體層的問題。並可避 免白知技術使用過多實體層，而影響相關積體電路良率 的問題，而達到提良率與降低成本的目的。 依據本發明之-特色，係㈣―種使用#線器連接 層與UTMI介面之通用序龍流排複合式裝置，其係經由 一通用序列匯流排（USB)之纜線與一主機連接，該裝置包 含么一通用序列匯流排實體層、—集線器連接層及複數個 功能連接層。該通用序縣制㈣層魏送該通用序 列匯流排之訊號；該集線器連接層係經由一utmi介面連 接該通用序舰流排實體層’其具有複數個下行連接璋 以提供連結，並回應該主機所執行之利序龍流排交 易（USB transaction);該複數個功能連接層係經由複數 個UTMI介面連接該集線器連接層之下行連接埠。 1238320 由於本發明設計新穎，能提供產業上利用，且確有 增進功效，故依法申請發明專利。 【四、實施方式】 圖2顯示本發明之使用集線器連接層與UTMI介面之 通用序列匯流排複合式裝置的方塊圖’其係經由一通用 序列匯流排（USB)之纜線與一主機連接，此裝置包含一通 用序列匯流排（USB)實體層（PHY)210、一集線器連接層 220、一第一功能連接層230及一第二功能連接層240，其 中，該第一功能連接層230可為一印表機連接層（printer link layer)，該第二功能連接層240可為一掃描器連接 層（scanner 1 ink layer)，其僅為說明本發明之例子， 不應作為本發明權利範圍之限制。 該通用序列匯流排（USB)實體層（PHY)210係收送該 通用序列匯流排（USB)之USBD+及USBD-訊號。當該實體層 (PHY)210從該通用序列匯流排（USB)接收訊號時，則將該 通用序列匯流排（USB)之USBD+及USBD-訊號轉換為一 UTMI(USB 2· 0 Transceiver Macrocell Interface)介面 訊號。當該實體層（PHY)210從該通用序列匯流排（USB)傳 送訊號時，則將該UTM I介面訊號轉換為通用序列匯流排 (USB)之 USBD+及 USBD-訊號。 該集線器連接層220經由一 UTMI介面連接該通用序 列匯流排實體層210，並回應該主機200所執行之通用序 列匯流排列舉（USB enumeration)。當實體層（PHY)210與 該主機200經由一 USB纜線電氣連結時，本發明之裝置中 1238320 僅有該集線器連接層220在致能狀態，該第一功能連接層 230及第二功能連接層240仍屬禁能狀態。此時主機200先 對該集線器連接層220發送一重置（reset)訊號，以重置 該集線器連接層220。之後，該主機200再對該集線器連 接層220發送一通用序列匯流排列舉（USB enumeration) 封包，以對該集線器連接層220進行列舉（USB enumeration) 〇 該集線器連接層220具有下行連接埠221、222，該第 一功能連接層230經由一 UTMI介面與該下行連接埠221電 氣連結，而該第二功能連接層240與該下行連接埠222電 氣連結。該下行連接埠221、222初始時係禁能，故與該 下行連接埠221、222連結之UTMI介面訊號在初始時會被 該集線器連接層220閘限住（gating)，故當該主機200對 該集線器連接層220進行列舉（USB enumeration)時，該 第一功能連接層230及該第二功能連接層240無法看到相 關之資料，該主機200俾可正常地對該集線器連接層220 進行列舉。 當該主機對該集線器連接層220進行列舉完後，主機 會向集線器詢問集線器下行連接埠的狀態，而得知下行 連接埠有裝置存在，由於該集線器連接層220之下行連接 埠221有連結該第一功能連接層230，故該主機200會先對 該集線器連接層220下一命令，以重置（reset)該下行連 接埠221。之後，該主機200再對該集線器連接層220下一 命令，以將該下行連接璋221致能（enab 1 e)。最後，該主 機200再對與該下行連接埠221連接的第一功能連接層 1238320 230進行USB列舉（USB enumeration)。此時，該集線器連 接層220已進行完列舉，而該第二功能連接層240及其相 關之下行連接埠222仍為禁能狀態，故該主機200可正常 地對該第一功能連接層230進行列舉。 同理，由於該集線器連接層220之下行連接埠222有 連結該第二功能連接層240，故該主機200會先對該集線 器連接層220下一命令，以重置（reset)該下行連接埠 222。之後，該主機200再對該集線器連接層220下一命 令，以將該下行連接埠222致能（enable)。最後，該主機 200再對與該下行連接埠222連接的第二功能連接層240 進行USB列舉（USB enumeration)。此時，該集線器連接 層220及該第一功能連接層230已進行完列舉，故該主機 200可正常地對該第二功能連接層240進行列舉。 其後，由於該集線器連接層220、該第一功能連接層 230及該第二功能連接層240已執行完列舉，該第一功能 連接層230及該第二功能連接層240可透過UTMI看到從該 主機200下來的傳輸封包（Transact ion Packet)。如果正 好是針對第一功能連接層230，該第一功能連接層230就 會回應，而此回應會透過UTMI往上傳，該集線器連接層 220則略過此回應並將之送到該實體層210，該實體層210 轉換成U S B訊號傳給該主機2 0 0。 由上述之說明可知，本發明之技術無需像習知技術 使用6個實體層，僅需在主機200及本發明裝置上各使用 一個實體層即可，可節省積體電路所使用的面積，而達 到降低成本，同時由於實體層包含類比技術，本發明裝 1238320 其良率會習知技術所生產之積 置由於使用較少實體層 體電路較高。 均二、门显 明無論就目的、手段及功效，在在 貴審查委員明察，早曰賜准專利，俾嘉 ㈣^ 便。惟纽意的是，上述諸多實施例僅 自】=說明！舉例而已，本發明所主張之權利範圍 …Μ專利|&圍所述為準，而非僅限於上述實施例。 L五、圖式簡單說明】 ··係習知個人電腦連接多個USB裝置的示意圖。 回係本I明之一種使用集線器連接層與UTMI介面之 通用序列匯流排複合式裝置之架構圖。 【圖號說明】 主機 110 集線器 120 下行連接埠 122 印表機 130 掃描器 140 主機 200 集線器連接層 220 第二功能連接層 240 T行連接琿 222 下行連接埠 111 上行連接埠 121 下行連接埠 123 上行連接埠 131 上行連接埠 141 實體層 210 第一功能連接層 230 下行連接埠 2211238320 发明 Description of the invention (the description of the invention should state: the technical field, prior art, content, embodiments, and drawings of the invention) [I. Technical Field to which the invention belongs] The present invention relates to the technology of a universal serial bus Field 'especially a universal serial bus composite device. [II. Prior technology] Due to the rapid evolution of electronic technology, today's electronic products are all evolving towards the trend of rapid transmission. In personal computers, the widely used Universal Serial Bus (USB) has also evolved from USB 1 · 1 to USB 2.0. In the USB2.0 specification, the fastest transmission speed can reach 480Mbits / s, which is nearly 40 times faster than the transmission speed of 12Mbits / s of USB1.1. It uses differential pair signals USBD + and USBD- for transmission. Considering its transmission speed is up to 480Mbits / s, and the transmission and reception of differential pair signals USBD + and USBD- involve analog technology, Intel Corporation defines a UTMI (USB 2.0 Transceiver Macrocell Inter face) interface signal to allow specialized and Analog technology companies can design UTM (USB 2.0 Transceiver Macrocell, UTM), while other integrated circuit design companies design other functions in the USB 2.0 specification to achieve the purpose of division of labor and accelerate the promotion of USB 2.0 products. However, when a host 110 with a USB 2.0 slot wants to connect multiple USB devices, due to the limitation of the number of USB slots, as shown in FIG. 1, the host 110 needs to be connected to a hub 120 first, and then the hub 120's The downstream ports 122 and 123 are connected to the USB printer 130 and the USB scanner 140. As can be seen from Figure 1, this configuration requires the use of 6 physical layers. Therefore, the conventional 1238320 2 will use multiple physical layers, which will increase the cost. At the same time, the hub 120 ”has three continuous layers. Because the physical layer contains analog technology, which affects the yield of the centralized circuit, so the design of the conventional universal serial bus composite device still has many defects and it is necessary to improve it. Because of this, the inventor, based on the spirit of active invention, has thought of a "universal serial bus compound device using a hub to connect layers and cut! Interface" that can solve the above problems, and has studied this invention several times. [Three, the content of the invention] The purpose of this Maoyue is to provide a sequence ship composite device using a hub connection layer and a sun interface, which can solve the general serial sink peach composite device that requires multiple physical layers. problem. It can also avoid the problem that Baizhi technology uses too many physical layers, which affects the yield of related integrated circuits, and achieves the goal of improving yield and reducing costs. According to the features of the present invention, it is a universal sequence bus composite device using a # cable connector connection layer and a UTMI interface, which is connected to a host via a universal serial bus (USB) cable. The device includes a universal serial bus physical layer, a hub connection layer and a plurality of functional connection layers. The universal sequence system layer sends the signal of the universal sequence bus; the hub connection layer is connected to the universal sequence bus physical layer through a utmi interface, which has a plurality of downlink connections to provide links and respond The host executes the USB transaction; the multiple functional connection layers are connected to the downlink port of the hub connection layer through multiple UTMI interfaces. 1238320 Since the invention is novel in design, can provide industrial use, and indeed has enhanced efficacy, it has applied for an invention patent in accordance with the law. [Fourth Embodiment] Fig. 2 shows a block diagram of a universal serial bus composite device using a hub connection layer and a UTMI interface according to the present invention, which is connected to a host via a universal serial bus (USB) cable. The device includes a universal serial bus (USB) physical layer (PHY) 210, a hub connection layer 220, a first functional connection layer 230, and a second functional connection layer 240. The first functional connection layer 230 may be It is a printer link layer, and the second functional connection layer 240 may be a scanner 1 ink layer, which is only an example for explaining the present invention and should not be taken as the scope of the rights of the present invention. Restrictions. The universal serial bus (USB) physical layer (PHY) 210 receives USBD + and USBD- signals of the universal serial bus (USB). When the physical layer (PHY) 210 receives a signal from the universal serial bus (USB), the USBD + and USBD- signals of the universal serial bus (USB) are converted into a UTMI (USB 2.0 Transceiver Macrocell Interface) Interface signals. When the physical layer (PHY) 210 transmits a signal from the universal serial bus (USB), the UTM I interface signal is converted into USBD + and USBD- signals of the universal serial bus (USB). The hub connection layer 220 is connected to the universal serial bus entity layer 210 through a UTMI interface, and responds to the universal serial bus enumeration performed by the host 200. When the physical layer (PHY) 210 and the host 200 are electrically connected via a USB cable, in the device of the present invention 1238320 only the hub connection layer 220 is in an enabled state, the first functional connection layer 230 and the second functional connection Layer 240 is still disabled. At this time, the host 200 first sends a reset signal to the hub connection layer 220 to reset the hub connection layer 220. After that, the host 200 sends a USB serial enumeration packet to the hub connection layer 220 to enumerate the hub connection layer 220. The hub connection layer 220 has a downlink port 221, 222. The first functional connection layer 230 is electrically connected to the downstream port 221 through a UTMI interface, and the second functional connection layer 240 is electrically connected to the downstream port 222. The downlink ports 221 and 222 are initially disabled. Therefore, the UTMI interface signal connected to the downlink ports 221 and 222 will be initially gated by the hub connection layer 220. Therefore, when the host 200 pair When the hub connection layer 220 is enumerated (USB enumeration), the first function connection layer 230 and the second function connection layer 240 cannot see relevant information, and the host 200 can normally enumerate the hub connection layer 220. . When the host finishes enumerating the hub connection layer 220, the host will ask the hub for the status of the downlink port of the hub and learn that there are devices in the downlink port. The first functional connection layer 230, so the host 200 will first issue a command to the hub connection layer 220 to reset the downlink port 221. After that, the host 200 issues a next command to the hub connection layer 220 to enable the downlink connection 221 (enab 1 e). Finally, the host 200 performs USB enumeration on the first functional connection layer 1238320 230 connected to the downlink port 221. At this point, the hub connection layer 220 has been enumerated, and the second functional connection layer 240 and its associated downlink port 222 are still disabled, so the host 200 can normally properly connect to the first functional connection layer 230. Enumerate. Similarly, since the downstream port 222 of the hub connection layer 220 is connected to the second functional connection layer 240, the host 200 will first issue a command to the hub connection layer 220 to reset the downstream port. 222. After that, the host 200 issues a next command to the hub connection layer 220 to enable the downlink port 222. Finally, the host 200 performs USB enumeration on the second functional connection layer 240 connected to the downlink port 222. At this time, the hub connection layer 220 and the first functional connection layer 230 have been enumerated, so the host 200 can normally enumerate the second functional connection layer 240. Since the enumeration of the hub connection layer 220, the first functional connection layer 230, and the second functional connection layer 240 has been performed, the first functional connection layer 230 and the second functional connection layer 240 can be seen through UTMI. A transmission packet (Transact ion packet) from the host 200. If it happens to be the first functional connection layer 230, the first functional connection layer 230 will respond, and this response will be uploaded through UTMI. The hub connection layer 220 skips this response and sends it to the physical layer 210. The physical layer 210 is converted into a USB signal and transmitted to the host 2000. It can be known from the above description that the technology of the present invention does not need to use 6 physical layers like the conventional technology, only one physical layer is required on the host 200 and the device of the present invention, which can save the area used by the integrated circuit, and The cost reduction is achieved. At the same time, because the physical layer contains analog technology, the yield of the present invention 1213820 will be higher. Both the door and the door show that regardless of the purpose, means and effect, the examiners in your country have made a clear observation and granted the quasi-patent as soon as possible. What's new is that many of the above-mentioned embodiments are only from] = description! By way of example, the scope of the rights claimed in the present invention ... M patent | & shall prevail, but not limited to the above embodiments. L V. Brief Description of Drawings] ·· It is a schematic diagram of a conventional personal computer connected to multiple USB devices. This is the architecture diagram of a universal serial bus composite device using a hub connection layer and UTMI interface. [Illustration of number] Host 110 Hub 120 Downlink port 122 Printer 130 Scanner 140 Host 200 Hub connection layer 220 Second functional connection layer 240 T-line connection 珲 222 Downstream port 111 Upstream port 121 Downstream port 123 Upstream Port 131 Uplink port 141 Physical layer 210 First functional connection layer 230 Downlink port 221